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SUMMARY GF OPERATIONS ON CONTRACT WO. W-28-O9heeng-33
FOR THE YONTH OF OCTOBER 1947,
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The basic program of the Applied Fisheries Laboratory, eon
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the effect of X-rays upon aquatic organisms, has sgain besagehe
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effort of the staff.
Most of the Bikini material has been sito,or
funneled into channels where the material and information will be most
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By:
“Sections I and II
Date:
G Bor Authorized for Public Release
The second expected spamming migration of marked chinook galmon from
the 1944 liberation at Samish River occurred during the month of October 1947,
Thirty-six adults lacking adipose fin and either the right or left pelvic
fin wera recaptured in the trap across the Samish River.
Of the 36 fish,
21 were from parent fish treated with 100 r of X-ray prior to spawning, and
included 14 females and 7 males.
Of the 15 *controls” 9 were female and
6 male.
Fifteen egg lots (8, control and 7, 100r -100 r) were obtained.
Three
100r-100r females died through accidents before spawning and their egzs
could not be used.
This second year's recoveries represent an increase of approximately
four fold over the mumber of females recaptured the first year (1946) when
only 4 females which produced 4 egg lots were spawned.
In addition to the
4 females recaptured in 1946, a total of 19 males was recovered.
It is ex-
pected that further recaptures, although not so many, will be made in 1948,
No significant differences in numbers, size, number of egss, or initial
mortality, between controls and irradiated stock exist as yet.
Hatching will
# Section numbers refer to the Project Chronology Chart, revised Jamary 9, 1947.
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